Battery device and electric device

Abstract

The invention belongs to the technical field of batteries, and provides a battery device and a power utilization device.The battery device comprises a box body, a plurality of single batteries and an output electrode, the box body is provided with a containing space, and the single batteries are stacked to form a single battery group; the output pole comprises an output pole first part, the output pole first part comprises a seat body part and a stand column part, and the stand column part is connected to the seat body part and protrudes out of the surface of the seat body part; the base part is electrically connected to the battery cells. According to the invention, the dependence on the end plate can be reduced, and the structural complexity of the output pole connection position is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and a power utilization device. BACKGROUND

[0002] In the field of new energy, the battery device is a core component for energy storage and output, and the structural design of the battery device directly affects the overall performance. In the existing battery device, the output pole is locked on the end plate by a single metal sheet and a bolt structure, so that the fixation of the output pole excessively depends on the end plate, and the combined structure of the output pole and the end plate is too complex. SUMMARY

[0003] The purpose of the present application is to provide a battery device and a power utilization device, which aims to solve the technical problem that the fixation of the output pole excessively depends on the end plate, resulting in a too complex structure of the output pole and the end plate.

[0004] The technical scheme adopted by the embodiments of the present application is as follows: In a first aspect, the present application provides a battery device, comprising: a box body having a containing space; a plurality of battery monomers, the plurality of battery monomers being arranged in a stacked manner to form a battery monomer group; an output pole comprising an output pole first component, the output pole first component comprising a seat body and a stand column, the stand column being connected to the seat body and protruding from the surface of the seat body; the seat body being electrically connected to the battery monomer.

[0005] In this embodiment, the output pole of the battery device adopts the structural form of the output pole first component, the stand column in the output pole first component is convenient for electrical connection with external electrical components, and the seat body in the output pole first component can be electrically connected to the battery monomer, so that the output pole first component can be stably arranged in the battery device without the aid of limit pieces and bolt assemblies, which is beneficial to reduce the dependence of the output pole on the end plate and simplify the structure.

[0006] In one of the embodiments, the battery device further comprises an output pole second component, the output pole second component being connected to the pole column and the seat body of the battery monomer respectively, and the seat body being fixedly connected to the output pole second component.

[0007] In the embodiment, the output pole of the battery device is combined by the output pole first component and the output pole second component, the column part in the output pole first component is convenient for electrical connection with external electrical components, the output pole second component can connect and limit the seat part in the output pole first component while connecting with the battery monomer, so that the output pole first component can be stably arranged in the battery device without the help of end plates and bolt assemblies, which is beneficial to reduce the dependence of the output pole on the end plate, and can simplify the combination design between the output pole first component and the output pole second component and simplify the structure.

[0008] In one of the embodiments, the seat part is a laminated sheet structure.

[0009] In the embodiment, the laminated design can provide convenience for subsequent bending processing of the seat part, and can have a positive effect on reducing internal resistance and current sharing.

[0010] In one of the embodiments, the seat part includes a first part, a bending part and a second part, the bending part is connected between the first part and the second part; the first part and the second part are arranged in a staggered manner along the height direction of the battery monomer; the column part is connected to the first part, and the output pole second component is connected to the second part.

[0011] In the embodiment, the first part and the second part of the seat part are arranged in a staggered manner, which can more reasonably utilize the space in the height direction, reduce the generation of redundant space and improve the space utilization.

[0012] In one of the embodiments, the output pole second component is overlapped on the second part and welded with the second part.

[0013] In the embodiment, the overlapping manner not only realizes the electrical connection between the output pole second component and the second part, but also has a more effective limiting effect on the second part, which can further limit the displacement of the seat part and ensure the stability of the connection between the output pole first component and the output pole second component.

[0014] In one of the embodiments, the box body includes a frame and a support plate connected to the frame, the frame and the support plate jointly enclose to form a containing space; the output pole is arranged on the side of the battery monomer away from the support plate, and the column part is arranged in the direction away from the top.

[0015] In the embodiment, the seat part and the column part are arranged on the side of the battery monomer away from the support plate, which can save the space inside the battery device and facilitate the connection between the column part and the electrical components outside the battery device, improving the convenience of connection.

[0016] In one of the embodiments, the battery device further comprises a limiting support, and the limiting support is provided with a limiting structure, and the limiting structure is connected with the output pole second component and / or the seat part.

[0017] In the embodiment, the limiting support is additionally provided, and the limiting structure can further position and limit the output pole second component and the seat part, so as to improve the structural stability of the output pole second component and the output pole first component. In addition, the limiting structure can also play an insulation role, so as to reduce the risk of short circuit between the output pole first component, the output pole second component and other metal structures.

[0018] In one of the embodiments, the battery device further comprises a circuit board and a bus component, and the plurality of battery cells are electrically connected through the bus component. At least one of the output pole second component and the limiting support is integrally formed with the circuit board and the bus component through hot pressing.

[0019] In the embodiment, at least one of the output pole second component and the limiting support is integrally formed with the circuit board and the bus component through hot pressing, so as to reduce the connection points between the components, reduce the contact resistance and the risk of failure, and improve the overall reliability of the battery device. The hot pressing process makes the components closely connected and compact in structure, which is beneficial to save the space inside the battery device and improve the energy density of the battery device.

[0020] In one of the embodiments, the limiting support comprises a limiting plate part and a limiting structure connected to the edge of the limiting plate part. The limiting plate part covers part of the battery cells, and the side plate surface of the limiting plate part facing the battery cells is provided with a rib structure.

[0021] In the embodiment, the side plate surface of the limiting plate part facing the battery cells is provided with a rib structure, so as to improve the anti-deformation ability of the limiting support and make the limiting support have better supporting and limiting effects.

[0022] In one of the embodiments, the battery device further comprises an output pole cover, and the output pole cover comprises a cover part and a sleeve part connected to the cover part. The cover part covers at least the seat part and at least part of the output pole second component, and the sleeve part is sleeved on the outside of the column part.

[0023] In the embodiment, the output pole cover can play an electrical insulation role, so as to reduce the risk of short circuit between the column part, the seat part, the output pole second component and the surrounding electrical components. In addition, the output pole cover can also protect the seat part and the output pole second component, so as to prevent dust, water vapor and the like from entering the connection part and affecting the conductivity and the connection reliability.

[0024] In one of the embodiments, the cover body part has an assembling hole, the sleeve part is arranged on the assembling hole, and the output pole second part has an edge side close to the assembling hole, and a gap is formed between the edge side and the hole wall of the assembling hole.

[0025] In the embodiment, the gap is formed between the edge side of the output pole second part and the hole wall of the assembling hole, so that the insulation failure and short circuit risk between the output pole second part and the box cover part can be effectively reduced, and the stable operation of the battery device is ensured.

[0026] In one of the embodiments, the battery device further comprises a jumper plate assembly electrically connected to the circuit board, the cover body part has a relief hole formed at a position corresponding to the jumper plate assembly, the cover body part covers the jumper plate assembly, and the jumper plate assembly is at least partially arranged in the relief hole.

[0027] In the embodiment, the relief hole is arranged so that the output pole cover does not interfere with the normal operation of the jumper plate assembly while covering the seat body part and the output pole second part, thereby ensuring the circuit connection function of the jumper plate assembly. The partial coverage of the cover body part on the jumper plate assembly also plays a certain protective role, which can reduce the influence of external factors.

[0028] In one of the embodiments, the jumper plate assembly is arranged on the limiting support, and the cover body part covers the jumper plate assembly and the limiting support.

[0029] In the embodiment, the cover body part can cover the limiting support and the jumper plate assembly, and can be provided with a relief hole to avoid the conductive part of the jumper plate assembly. The limiting support and the jumper plate assembly are protected, and the normal operation of the jumper plate assembly is ensured.

[0030] In one of the embodiments, the battery device further comprises a cover film, which covers the seat body part; or, the cover film covers the seat body part and the output pole second part.

[0031] In the embodiment, compared with the output pole cover, the cover film has a simpler structure, is easy to manufacture and install, and is conducive to reducing the production cost of the battery device.

[0032] In one of the embodiments, a plurality of battery monomers are arranged in a first direction to form two end parts; the box body comprises at least a limiting member arranged at one of the end parts in the first direction; and the seat body part is at least partially connected to the limiting member.

[0033] In the embodiment, the seat body part is connected to the limiting member, so that the output pole first part is more stably supported, and the anti-vibration and anti-impact capabilities are improved.

[0034] In one of the embodiments, the side of the limiting member facing the seat body part is formed with a recess, and the seat body part is at least partially arranged in the recess.

[0035] In the embodiment, the inner recess is arranged on the top of the limiting member, so that the seat body part is arranged at least partially inside the inner recess, thereby reducing the occupied space of the output pole first part in the height direction of the battery device and improving the space utilization.

[0036] In one of the embodiments, the battery device further comprises an insulating sheet arranged at least between the seat body part and the inner recess.

[0037] In the embodiment, the insulating sheet serves as an insulating isolation, so that the seat body part and the end plate part are not electrically connected, thereby reducing the probability of short circuit failure. In addition, the insulating sheet can also reduce the friction and wear between the seat body part and the limiting member.

[0038] In one of the embodiments, the limiting member is a die-cast end plate, and the box body further comprises a side plate, and the die-cast end plate is connected with the side plate to jointly form the accommodation space.

[0039] In the embodiment, the die-cast end plate and the side plate are connected, which can improve the structural strength and deformation resistance of the box body.

[0040] In one of the embodiments, the plurality of battery monomers are arranged in a stack along the first direction, and the battery monomer at the end is provided with an explosion-proof valve on the side facing the seat body part; at least part of the seat body part is arranged opposite to the explosion-proof valve; and the battery device further comprises an insulating cover, at least part of the insulating cover being arranged between the explosion-proof valve and the at least part of the seat body part.

[0041] In the embodiment, the insulating cover can reduce the risk of short circuit between the output pole first part and the explosion-proof valve.

[0042] In one of the embodiments, the insulating cover comprises a first sheet body part and a second sheet body part connected with the first sheet body part, the first sheet body part and the second sheet body part are arranged at an angle, the first sheet body part is attached to the side wall of the battery monomer, and the second sheet body part is arranged between the explosion-proof valve and the at least part of the seat body part.

[0043] In the embodiment, the first sheet body part attached to the side wall provides stable support for the entire insulating cover, so that the second sheet body part can be reliably located between the explosion-proof valve and the seat body part, thereby fully playing the protection role; the structure arranged at an angle enables the insulating cover to be more stably installed on the battery monomer, thereby further improving the protection effect of the insulating cover.

[0044] In one of the embodiments, the battery device further comprises a circuit board and an information acquisition component, the battery monomer has a monitoring window, the information acquisition component is arranged on the monitoring window and connected with the battery monomer; the circuit board comprises a main body part and a turn-up part, both of which are provided with circuit structures, the main body part is arranged along a first direction, the main body part is respectively provided with opposite first and second sides, and the monitoring window is arranged close to the first side; the turn-up part is connected to the second side of the main body part, and the turn-up part extends from the second side to the first side and is electrically connected with the information acquisition component; the first direction, the second direction and the third direction are perpendicular to each other.

[0045] In the embodiment, the turn-up part is arranged on the circuit board, so that the side of the circuit board away from the monitoring window can also be electrically connected with the monitoring window, without changing the original circuit arrangement of the circuit board, the use range of the circuit board is improved, and the manufacturing cost is saved.

[0046] In one of the embodiments, the battery device further comprises a circuit board electrically connected with each battery monomer, and the circuit board is arranged on the side of the battery monomer close to the seat body part; the output pole second component has a sunken part, and the circuit board is connected to the output pole second component and limited on the sunken part.

[0047] In the embodiment, the sunken part is arranged on the output pole second component, so that the circuit board can be accommodated and limited, the height of the circuit board is matched, and the stability of the circuit board is improved.

[0048] In a second aspect, the application provides a power utilization device, which comprises the battery device of any one of the above.

[0049] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical scheme of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments of the application or the prior art description. Obviously, the drawings described below are only some embodiments of the application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0051] Figure 1 The structural schematic diagram of the vehicle is provided for some embodiments of the application; Figure 2 The exploded structural schematic diagram of the battery device is provided for some embodiments of the application; Figure 3 Partial structure diagram of battery device provided by some embodiments of the present application Figure 1 ; Figure 4 Partial structure diagram of battery device provided by some embodiments of the present application Figure 3 ; Figure 5 Partial structure diagram of battery device provided by some embodiments of the present application Figure 2 ; Figure 6 Structure diagram of connection between output pole first component and output pole second component in battery device provided by some embodiments of the present application Figure 7 Structure diagram of output pole first component in battery device provided by some embodiments of the present application Figure 8 Structure diagram of connection between output pole first component, output pole second component, limiting support and busbar component in battery device provided by some embodiments of the present application Figure 1 ; Figure 9 Structure diagram of connection between output pole first component, output pole second component, limiting support and busbar component in battery device provided by some embodiments of the present application Figure 2 ; Figure 10 Structure diagram of limiting support in battery device provided by some embodiments of the present application Figure 11 Structure diagram of battery device provided by some embodiments of the present application Figure 10 ; Figure 12 Structure diagram of battery device provided by some embodiments of the present application Figure 13 Structure diagram of battery device provided by some embodiments of the present application Figure 12 ; Figure 14 Structure diagram of connection between output pole cover, limiting support, output pole first component and output pole second component in battery device provided by some embodiments of the present application Figure 15 Structure diagram of battery device provided by some embodiments of the present application Figure 14 ; Figure 16 Structure diagram of connection between output pole cover and output pole second component in battery device provided by some embodiments of the present application Figure 17 Structure diagram of connection between cover film, output pole second component and output pole first component in battery device provided by some embodiments of the present application Figure 18Structure diagram of the limiting member in the battery device provided for some embodiments of the present application; Figure 19 Structure diagram of the insulating sheet in the battery device provided for some embodiments of the present application; Figure 20 Structure diagram of the battery monomer in the battery device provided for some embodiments of the present application; Figure 21 Structure diagram of the insulating cover in the battery device provided for some embodiments of the present application; Figure 22 Structure diagram of the connection of the insulating cover, the battery monomer and the limiting member in the battery device provided for some embodiments of the present application; Figure 23 Structure diagram of the circuit board in the battery device provided for some embodiments of the present application; Figure 24 Structure diagram of the circuit layout on the material blank before the turning-up of the circuit board in the battery device provided for some embodiments of the present application.

[0052] Explanation of the reference signs: 1000. Vehicle; 1100. Battery assembly; 1110. Housing; 1111. Housing cover; 1112. Housing frame; 1113. Compartment; 1114. Support plate; 1115. Frame; 1120. Battery cell pack; 1121. Battery cell; 11211. Explosion-proof valve; 11212. Convex structure; 11213. Terminal post; 11214. Monitoring window; 1122. First output terminal component; 1122 1. Base body; 11222. Column body; 11223. First part; 11224. Second part; 11225. Bending part; 1123. Second output terminal component; 11231. Recessed part; 11232. Edge side; 11233. Overlapping position; 1124. Limiting bracket; 11241. Limiting structure; 11242. Limiting plate body; 11243. Rib structure; 1125. Circuit board; 11251. 11252. Flanged edge; 11253. Second side; 11254. First side; 11255. Preset circuit; 11256. Main body; 1126. Busbar component; 1127. Output cover; 11271. Cover part; 11272. Sleeve part; 11273. Clearance hole; 11274. Hole wall of assembly hole; 11275. Assembly hole; 1128. Jumper board assembly; 1129. Cover film; 1130. Limiting component; 1130 1. Recessed portion; 1131. Insulating sheet; 1132. Insulating cover; 11321. First sheet body; 11322. Second sheet body; 1133. Side plate; 1134. Hot-press film; 11341. Upper hot-press film; 11342. Lower hot-press film; 1135. Information acquisition component; 1136. Output pole; 1200. Controller; 1300. Motor; X, First direction; Y, Second direction; Z, Third direction; L, Gap. Detailed Implementation

[0053] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0055] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0056] Reference herein to "embodiments" means that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0057] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0058] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0059] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0060] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0061] In the field of new energy, the battery device as the core component of energy storage and output, its structure design directly affects the overall performance. In the existing battery device, the output pole adopts a single metal sheet connected with the external circuit, and the output pole is locked on the end plate through a bolt structure, and the end plate is usually arranged at both ends of the battery device and distributed along the arrangement direction of the battery monomer. Usually, mounting holes are arranged on the end plate, the output pole is inserted into the mounting hole, and is fixed through a bolt assembly, and in some cases, a mounting seat needs to be configured to bear the output pole, causing the structure between the output pole and the end plate to be relatively complex, and there are many redundant structures. The fixation of the output pole excessively depends on the end plate, causing the structure of the output pole and the end plate to be too complex.

[0062] Therefore, the battery device is provided, the output pole in the battery device is provided with an output pole first component, wherein a stand column part connected with the external circuit and a seat body part electrically connected with the battery monomer are arranged on the output pole first component, so that the output pole first component is electrically connected and conducted between the battery monomer and the seat body part without being connected to the end plate, thereby making the output pole first component not need to be limited by the end plate and the bolt assembly, reducing the dependence of the output pole on the end plate, and simplifying the connection structure between the output pole and the end plate.

[0063] Specifically, referring to Figure 3 It is shown that the battery device 1100 provided by the embodiments of the present application comprises one or more battery monomers 1121, and the plurality of battery monomers 1121 are connected in series, in parallel or in series and parallel (i.e. in series and / or in parallel) to form the battery device 1100. Of course, the plurality of battery monomers 1121 can also be equipped with corresponding structural members, electrical connecting members and functional units of auxiliary components. For example, the plurality of battery monomers 1121 can be connected in series, in parallel or in series and parallel through a bus member 1126.

[0064] Referring to Figure 2 It is shown that the battery device 1100 provided by the embodiments of the present application also comprises one or more battery monomers 1121, and the plurality of battery monomers 1121 are connected in series, in parallel or in series and parallel (i.e. in series and / or in parallel) to form the battery device 1100. Of course, the plurality of battery monomers 1121 can also be equipped with corresponding structural members, electrical connecting members and functional units of auxiliary components. For example, the plurality of battery monomers 1121 can be connected in series, in parallel or in series and parallel through a bus member 1126.

[0065] The following embodiments are described by taking a vehicle 1000 as an example.

[0066] Please refer to Figure 1 , Figure 1 A structural schematic diagram of the vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric vehicle, a hybrid vehicle, or a range extended vehicle, etc. The vehicle 1000 is internally provided with a battery device 1100, which can be arranged at the bottom, head or tail of the vehicle 1000. The battery device 1100 can be used for power supply of the vehicle 1000, for example, the battery device 1100 can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 1200 and a motor 1300, and the controller 1200 is used to control the battery device 1100 to supply power to the motor 1300, for example, to meet the power demand of the vehicle 1000 during starting, navigation and driving.

[0067] In some embodiments of the present application, the battery device 1100 can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0068] According to some embodiments of the present application, referring to Figures 3-5 The battery device 1100 provided by the embodiments of the present application includes a box body 1110, an output pole and a plurality of battery monomers 1121, wherein the box body 1110 has a containing space 1113; the plurality of battery monomers 1121 are arranged in a stacked manner to form a battery monomer group 1120; the output pole 1136 includes an output pole first component 1122, the output pole first component 1122 includes a seat body part 11221 and a column part 11222, the column part 11222 is connected to the seat body part 11221 and protrudes from the surface of the seat body part 11221; and the seat body part 11221 is electrically connected to the battery monomer 1121.

[0069] Specifically, referring to Figures 3-5As shown, the battery device 1100 can include at least one battery cell 1121, and generally, the battery device 1100 includes a plurality of battery cells 1121 arranged in series. The stacking direction of the plurality of battery cells 1121 can be set as a first direction X. For a cubic battery cell 1121 (or for a square cell), the first direction X can also be considered as the thickness direction of the battery cell 1121. The width direction of the battery cell 1121 can be considered as a second direction Y, and the height direction of the battery cell 1121 can be considered as a third direction Z. Any two of the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. Of course, for some battery devices 1100, the plurality of battery cells 1121 can be stacked in the first direction X to form a battery cell group 1120, and a plurality of battery cell groups 1120 can be further stacked in the second direction Y to form a matrix-shaped battery cell square matrix. In this example, for ease of description, the battery device 1100 is described as including a column of battery cell groups 1120 stacked in the first direction X.

[0070] The battery cell 1121 refers to the smallest unit of the battery device 1100 and the battery device 1100. Each battery cell 1121 can be a secondary battery cell 1121 or a primary battery cell 1121. It can also be a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited thereto. The battery cell 1121 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes.

[0071] Generally, the plurality of battery cells 1121 are electrically connected in series, in parallel, or in a combination of series and parallel. For example, a busbar component 1126 is arranged between two adjacent battery cells 1121. The busbar component 1126 is a metal component capable of conducting electricity, such as a copper bar or an aluminum bar.

[0072] The plurality of battery cells 1121 form the total output end of the battery device 1100 at one or both ends in the first direction X. Taking the battery device 1100 with one output end as an example, the output end includes an output pole first component 1122. Referring to Figure 6 and Figure 7As shown, the output pole first component 1122 includes two parts, one part is a seat part 11221 which is electrically connected with the battery monomer 1121, and the other part is a column part 11222 which is connected on the seat part 11221 and protrudes from the surface of the seat part 11221, so that the end of the column part 11222 away from the seat part 11221 forms a connecting end connected with the external circuit structure. The seat part 11221 is a bridge for transmitting current between the battery monomer 1121 and the column part 11222, therefore, the seat part 11221 is connected with the pole column 11213 of the battery monomer 1121, for example, is welded.

[0073] For example, in one specific example, referring to Figures 5-7 and Figure 20 As shown, the battery device 1100 is provided with a plurality of battery monomers 1121 arranged in a stack along the first direction X, the height direction (i.e. the third direction Z) of each battery monomer 1121 is along the vertical direction, each battery monomer 1121 has a pole column 11213 (including a positive pole column and a negative pole column), the pole column 11213 is located at the top end of the battery monomer 1121, and the stacking plane of the battery monomer 1121 is the large plane (i.e. the plane with larger side area) of the battery monomer 1121. Along the first direction X, the output pole 1136 of the battery device 1100 is located at one end of the battery device 1100, that is, the output pole first component 1122 is arranged at the position of the battery monomer 1121 close to the end. The seat part 11221 is welded and fixed with the pole column 11213 of the battery monomer 1121 at the end, and the column part 11222 is welded on the seat part 11221. In order to facilitate the connection of the column part 11222 with the electrical components outside the battery device 1100 and provide a convenient connection interface for current output, the column part 11222 can have a relatively high protruding height, for example, the column part 11222 is in a cylindrical shape, and the length-diameter ratio (the ratio of height to diameter) of the column part 11222 is greater than 1.5, for example, the length-diameter ratio is any value between 3-10; for example, if the diameter of the column part 11222 is 5mm, then the height of the column part 11222 can be 10mm, 20mm, 30mm, etc.

[0074] In the output pole first component 1122, the seat part 11221 is made of metal material, for example, the seat part 11221 is made of copper material or aluminum material or aluminum alloy material. The seat part 11221 can be made of an integral metal plate. In order to reduce the weight of the seat part 11221, the seat part 11221 can also be provided with a hollow structure.

[0075] The column part 11222 can be made of brass, and is connected to the center of the seat part 11221 by friction welding. The column part 11222 can be divided into multiple sections in the height direction, and the diameters of the sections can be different, so that the column part 11222 forms a shoulder in the height direction to be able to cooperate with external electrical components. For example, in the height direction, the column part 11222 includes three sections, which are a first column section, a second column section, and a third column section connected in sequence, the third column section is directly welded to the seat part 11221, the second column section has the largest diameter, and the first column section has the smallest diameter. In the radial direction, the second column section forms a convex shoulder.

[0076] The battery device 1100 in the example can be provided with a limiting piece 1130 (which can be understood as an end plate), or can not be provided with the limiting piece 1130. The output pole first component 1122 is no longer fixed and limited by the limiting piece 1130 (i.e., the end plate), and the output pole second component 1123 is electrically connected to the battery cell 1121, and then the output pole first component 1122 is limited and fixed.

[0077] In combination Figure 2 As shown, the battery device 1100 can further include a box 1110, the box 1110 has a containing space 1113, and the battery cell 1121 is contained in the containing space 1113. For example, the box 1110 includes a box cover part 1111 and a box frame part 1112, the box cover part 1111 and the box frame part 1112 are covered with each other, and the box cover part 1111 and the box frame part 1112 jointly define the containing space 1113 for containing the battery device 1100 or the battery cell 1121. The box frame part 1112 can be a hollow structure with one end open, and the box cover part 1111 can be a plate-shaped structure. In this case, the box cover part 1111 can be understood as an end cover of the box 1110, and the box cover part 1111 is covered on the open side of the box frame part 1112, so that the box cover part 1111 and the box frame part 1112 jointly define the containing space 1113. The box cover part 1111 and the box frame part 1112 can also be hollow structures with one side open, and the open side of the box cover part 1111 is covered on the open side of the box frame part 1112. Of course, the box 1110 formed by the box cover part 1111 and the box frame part 1112 can have various shapes, such as a cylinder, a cuboid, etc. In the present application, the box 1110 is taken as a cuboid for example. Generally, in the battery device 1100, one end of each battery cell 1121 provided with the pole 11213 is arranged opposite to the box cover part 1111.

[0078] In the embodiment, the battery device 1100 is provided with the output pole first component 1122, the output pole first component 1122 is provided with the column part 11222 connected with the external circuit and the seat part 11221 connected with the battery monomer 1121, the battery monomer 1121 can be connected, fixed and limited to the output pole first component 1122, so that the output pole first component 1122 can be stably arranged in the battery device 1100 without the aid of the limiting part 1130 and the bolt assembly, which is beneficial to reduce the dependence of the output pole 1136 (specifically the output pole first component 1122) on the limiting part 1130 and simplify the combination design between the output pole 1136 and the limiting part 1130 and the structure of the battery device 1100.

[0079] According to some embodiments of the application, referring to Figures 3-7 As shown in the figure, the output pole 1136 further includes the output pole second component 1123, the output pole second component 1123 is connected with the pole column 11213 and the seat part 11221 of the battery monomer 1121 respectively, and the seat part 11221 is fixedly connected to the output pole second component 1123.

[0080] Specifically, the battery device 1100 includes at least two components, which are the output pole first component 1122 and the output pole second component 1123; the output pole second component 1123 is a bridge for transmitting current between the battery monomer 1121 and the seat part 11221, so the output pole second component 1123 is connected with the pole column 11213 of the battery monomer 1121, for example, by welding; at the same time, the output pole second component 1123 is also connected with the seat part 11221, and the output pole second component 1123 can also limit the seat part 11221, for example, the seat part 11221 is welded on the output pole second component 1123, or the seat part 11221 and the output pole second component 1123 can be detachably connected through fasteners.

[0081] The output pole second component 1123 and the output pole first component 1122 are arranged at the position of the battery monomer 1121 close to the end part. The output pole second component 1123 is welded and fixed with the pole column 11213 of the battery monomer 1121 at the end part, and the output pole second component 1123 is also lapped with the seat part 11221 and welded at the lapped position 11233, and the column part 11222 is welded on the seat part 11221.

[0082] The output pole second component 1123 can be a busbar made of metal, such as a copper busbar or an aluminum busbar. The thickness of the busbar can be 2-5 mm. The surface of the busbar is plated with tin to enhance conductivity and corrosion resistance. The output pole second component 1123 can have a sheet structure. One end of the output pole second component 1123 can be connected to the pole column 11213 of the battery cell 1121 by ultrasonic welding. The welding area can have a diameter of 6 mm, and the welding strength can be no less than 50 N. The other end of the output pole second component 1123 is lapped on the seat body 11221. The lapped area is welded and fixed by laser welding, surfacing, friction welding, or the like. Alternatively, the other end of the output pole second component 1123 can be fixedly connected to the seat body 11221 of the output pole first component 1122 by a bolt. A spring washer is arranged at the bolt connection to prevent loosening and ensure long-term electrical continuity.

[0083] In this embodiment, the output pole 1136 of the battery device 1100 is formed by combining the output pole first component 1122 and the output pole second component 1123. The stand column 11222 in the output pole first component 1122 facilitates electrical connection with external electrical components. The output pole second component 1123 is connected to the battery cell 1121 and also connected to and limited by the seat body 11221 in the output pole first component 1122. Therefore, the output pole first component 1122 can be stably arranged in the battery device 1100 without the aid of a limiting member 1130 and a bolt assembly, which facilitates reducing the dependence of the output pole 1136 (specifically, the output pole first component 1122) on the limiting member 1130 and simplifying the combination design between the output pole 1136 (i.e., the output pole first component 1122 and the output pole second component 1123) and the limiting member 1130.

[0084] According to some embodiments of the present application, the seat body 11221 has a laminated sheet structure.

[0085] Specifically, the seat body 11221 can be formed by stacking multiple metal sheets. The metal sheets can be made of materials with good electrical conductivity, such as copper, aluminum, or alloys thereof. The multiple metal sheets can be formed into an integral sheet structure (or sheet structure) by pressing.

[0086] Compared with a non-laminated plate structure, the laminated structure of the seat body 11221 facilitates processing of the seat body 11221, such as stamping and bending.

[0087] In addition, the laminated sheet structure can increase the electrical conduction cross-sectional area of the seat body 11221, reduce the electrical resistance, and reduce energy loss during current transmission. The laminated structure can shorten the current path or increase the parallel electrical conduction cross-section to reduce the connection impedance, improve the efficiency, and reduce the heat generation.

[0088] In addition, the stacked sheet structure also has the function of current equalization. The multi-layered parallel stacked structure can balance the current distribution on the base part 11221 and reduce the risk of local overload.

[0089] Furthermore, the layered sheet structure gives the base portion 11221 better structural strength and toughness, enabling it to withstand greater external forces and stress caused by temperature changes, which is beneficial to extending the service life of the first output electrode component 1122.

[0090] In this embodiment, the layered design facilitates subsequent bending and processing of the base portion 11221, and has a positive effect on reducing internal resistance and equalizing flow.

[0091] According to some embodiments of this application, refer to Figure 7 As shown, the base portion 11221 includes a first portion 11223, a bent portion 11225, and a second portion 11224. The bent portion 11225 is connected between the first portion 11223 and the second portion 11224. Along the height direction of the battery cell 1121, the first portion 11223 and the second portion 11224 are staggered. The column portion 11222 is connected to the first portion 11223, and the output electrode second component 1123 is connected to the second portion 11224.

[0092] Specifically, considering that the base portion 11221 needs to connect both the column portion 11222 and the output electrode second component 1123, in order to reduce the interference between the column portion 11222 and the output electrode second component 1123, and considering that the height increases after the base portion 11221 and the output electrode second component 1123 overlap, connecting the column portion 11222 at the same position would easily increase the space occupied in the height direction, resulting in an increase in the height of the battery device 1100, therefore, a first part 11223 and a second part 11224 are formed on the base portion 11221 in a staggered arrangement. The first part 11223 and the second part 11224 are connected by a bending part 11225, so that the first part 11223, the second part 11224 and the bending part 11225 can be integrally formed.

[0093] Understandably, referring to Figure 6 As shown, the misalignment direction of the first part 11223 and the second part 11224 should be in the height direction. The second part 11224 is connected to the output electrode second component 1123 (e.g., overlapped). Therefore, in the height direction of the battery cell 1121, the height of the position of the second part 11224 should be higher than the height of the position of the first part 11223. Visually, the base portion 11221 may have a "Z" shape.

[0094] The above-mentioned staggered (or bent) shape design of the seat body part 11221 also takes into account the factor that some battery monomers 1121 have a protrusion on the top thereof. Specifically, in combination with Figure 20 As shown, a convex structure 11212 is formed on the top end surface of the battery monomer 1121, and the convex structure 11212 is usually located between two pole columns 11213. Such a battery monomer 1121 is also referred to as a convex battery monomer 1121. In order to reduce the interference problem of the output pole second part 1123 with the convex structure 11212, the height of the position corresponding to the convex structure 11212 of the output pole second part 1123 is increased, and the height of the position at which the output pole second part 1123 is connected to the seat body part 11221 (specifically, the second part 11224) is also increased accordingly. In order to reduce the space occupied by the output pole first part 1122 in the height direction, the height of the first part 11223 of the seat body part 11221 connected to the column part 11222 is reduced accordingly, so that the first part 11223 and the second part 11224 are arranged in a staggered manner.

[0095] In this embodiment, the first part 11223 and the second part 11224 of the seat body part 11221 are arranged in a staggered manner, which can more reasonably utilize the space in the height direction, reduce the generation of redundant space, and improve the space utilization.

[0096] According to some embodiments of the present application, referring to Figure 6 and Figure 7 As shown, the output pole second part 1123 is overlapped on the second part 11224 and is welded to the second part 11224.

[0097] Specifically, the overlapping manner of the output pole second part 1123 and the second part 11224 can increase the contact area therebetween, and the welding manner can further increase the connection firmness therebetween. The welding area covers the overlapping surface, which not only retains the conductive path of the surface contact therebetween, but also forms a mechanical strength support through the welding spot, thereby improving the limiting and fixing effect of the output pole second part 1123 on the seat body part 11221.

[0098] In addition, the overlapping surface formed between the output pole second part 1123 and the second part 11224 provides a large-area current conduction path, which cooperates with the multi-channel conductive characteristics of the laminated second part 11224, so that the current is more uniformly distributed, the risk of local overheating is reduced, and the heat loss is reduced.

[0099] Furthermore, the overlapping and welding manner between the output pole second component 1123 and the second part 11224 can improve the connection strength between the two, improve the ability of the battery device 1100 to resist external force under vibration and impact working conditions, and reduce the risk of loosening and separation between the two.

[0100] In the embodiment, the overlapping manner not only realizes the electrical connection between the output pole second component 1123 and the second part 11224, but also plays a more effective limiting role on the second part 11224, which can further limit the displacement of the seat body part 11221 and guarantee the stability of the connection between the output pole first component 1122 and the output pole second component 1123.

[0101] According to some embodiments of the present application, referring to Figures 2-5 As shown in the figure, the box body 1110 includes a frame body 1115 and a support plate 1114 connected to the frame body 1115, and the frame body 1115 and the support plate 1114 together enclose a containing space 1113; the output pole is arranged on the side of the battery monomer away from the support plate 1114, and the column part 11222 is arranged in the direction away from the support plate 1114.

[0102] For example, the box frame part 1112 includes the frame body 1115 and the support plate 1114, and in the case of horizontal placement of the battery device 1100, the support plate 1114 can be understood as the bottom plate of the box body 1110, and the battery monomer 1121 can be arranged opposite to the support plate 1114. The support plate 1114 can also support the battery monomer 1121, and the frame body 1115 can be understood as the lateral plate body of the box body 1110, which is annular, and the lateral plate body is connected with the support plate 1114 to form a hollow structure with an open side.

[0103] For example, in the case of horizontal placement of the battery device 1100, the battery device 1100 has a top part, and the seat body part 11221 and the column part 11222 are arranged on the top part of the battery device 1100, and the output pole is arranged on the side of the battery monomer 1121 away from the support plate 1114, and the column part 11222 is arranged in the direction away from the support plate 1114, which can be understood as the column part 11222 being arranged in the direction away from the top part.

[0104] Generally, the battery device 1100 is externally cuboid, and when the battery device 1100 is horizontally placed, the battery device 1100 has a side portion (including an end portion) and a top portion, and the battery cell 1121 also has a top portion, generally, the pole 11213 is located at the top portion of the battery cell 1121, and the top portion of the battery cell 1121 belongs to a part of the top portion of the battery device 1100; of course, the limiting member 1130 also has a top portion, and the top portion of the limiting member 1130 also belongs to a part of the top portion of the battery device 1100; that is, the top portion of the battery device 1100 includes the top portion of the limiting member 1130 and the top portion of the battery cell 1121. In the related art, the output pole is arranged at the side portion of the battery device 1100, and the lug of the output pole is led out from the side. However, in some battery devices 1100, the lateral space of the battery device 1100 is insufficient, and the lug at the side portion and the auxiliary component supporting and limiting the lug will interfere with other components, making it difficult to laterally arrange the output pole.

[0105] Therefore, in the example, the output pole first component 1122 is arranged at a side away from the support plate 1114 (i.e., the top portion of the battery device 1100), and the seat portion 11221 and the column portion 11222 are both located at the side of the battery device 1100 away from the support plate 1114. The output pole second component 1123 is connected with the pole 11213 of the battery cell 1121, and it can be known that the output pole second component 1123 is also located at the side of the battery device 1100 (specifically, the battery cell 1121) away from the support plate 1114, and then the output pole second component 1123 is connected with the base (specifically, the second portion 11224) more conveniently, and the convenient lapping can be realized.

[0106] The column portion 11222 is connected at a side of the seat portion 11221 (specifically, the first portion 11223) away from the battery cell 1121, and the column portion 11222 extends in a direction away from the seat portion 11221 and the battery cell 1121 by a predetermined height, for example, the extending direction of the column portion 11222 is parallel to the height direction of the battery cell 1121. When the first portion 11223 in the seat portion 11221 is a flat plate, the column portion 11222 can be arranged perpendicular to the first portion 11223.

[0107] The column portion 11222 is arranged at the side of the battery device 1100 away from the support plate 1114 and extends outward, which is convenient for connecting with external circuits, external electrical components or equipment, can simplify the connection structure of the battery device 1100 with the outside, and improve the installation efficiency. In addition, this arrangement mode can make the column portion 11222 away from the heating area of the battery cell 1121, and reduce the influence of temperature on the conductivity of the column portion 11222.

[0108] Further, arranging the first part of the output pole 11223 on the side of the battery device 1100 away from the support plate 1114 can also save space on the side of the battery device 1100, reduce the risk of interference between the battery device 1100 and other components on the side, and improve the utilization of the lateral space.

[0109] In the embodiment, arranging the seat part 11221 and the column part 11222 on the side of the battery device 1100 away from the support plate 1114 can save space of the battery device 1100, and facilitate the connection of the column part 11222 with the electrical components above the battery device 1100, and improve the convenience of connection.

[0110] According to some embodiments of the present application, as shown in Figure 4 , Figure 5 and Figures 8-11 , the battery device 1100 further comprises a limiting support 1124, which has a limiting structure 11241 connected with the second part of the output pole 1123 and / or the seat part 11221.

[0111] Specifically, the limiting support 1124 is a frame structure or a plate structure made of insulating material, for example, the limiting support 1124 is made of plastic. The limiting support 1124 is arranged on the side of the battery cell 1121 away from the support plate 1114 (i.e. the top of the battery cell 1121). One of the functions of the limiting support 1124 is to connect the limiting structure 11241 with the second part of the output pole 1123 and / or the seat part 11221 by arranging the limiting structure 11241, so as to limit the second part of the output pole 1123 and the first part of the output pole 1122.

[0112] The limiting structure 11241 can adopt a protruding structure, a groove structure or a hole structure, and the limiting mode of the limiting structure 11241 can adopt a clamping, a plug-in or a bolt connection mode. For example, the limiting support 1124 comprises a limiting plate body and a protruding part connected to the edge of the limiting plate body, and a clamping groove is arranged on the protruding part. The combination of the clamping groove and the protruding part forms the limiting structure 11241. The clamping groove can be plugged into the part of the seat part 11221 or the second part of the output pole 1123 or the seat part 11221 and the second part of the output pole 1123 that is overlapped, so as to limit the second part of the output pole 1123 and the seat part 11221.

[0113] The limiting structure 11241 can be an independent component connected to the main body of the limiting support 1124 in a fixed or detachable manner; or the limiting structure 11241 can also be formed on the limiting support 1124 in an integral molding manner.

[0114] The limiting support 1124 can be connected to the battery cell 1121, or the limiting support 1124 is fixed by hot-pressing the upper and lower PET films of the CCS (Cells Contact System) through a hot-pressing process.

[0115] The limiting support 1124 can extend to below the busbar component 1126 (see below) for connecting two adjacent battery cells 1121, so that the lower surface of the busbar component 1126 is attached to the upper surface of the limiting support 1124.

[0116] The limiting structure 11241 is connected to the output pole second component 1123 and / or the seat body 11221, in one case, the limiting structure 11241 is connected to the output pole second component 1123, in another case, the limiting structure 11241 is connected to the output pole first component 1122, and in another case, the limiting structure 11241 can be connected to the output pole first component 1122 and the output pole second component 1123 at the same time.

[0117] In this embodiment, by adding the limiting support 1124, the limiting structure 11241 can further position and limit the output pole second component 1123 and the seat body 11221, thereby improving the structural stability of the output pole second component 1123 and the output pole first component 1122. In addition, the limiting structure can also play an insulating role, reducing the risk of short circuit between the output pole first component 1122 and the output pole second component 1123 and other metal structures.

[0118] According to some embodiments of the present application, referring to Figure 4 , Figure 5 , Figure 12 and Figure 13 , the battery device 1100 further comprises a circuit board 1125 and a busbar 1126, and the plurality of battery cells 1121 are electrically connected through the busbar component 1126; at least one of the output pole second component 1123 and the limiting support 1124 is hot-pressed with the circuit board 1125 and the busbar component 1126 to form an integrated structure.

[0119] The battery device 1100 has a high-voltage part and a low-voltage part, wherein the high-voltage part is used for delivering current, and the low-voltage part is used for control, and the low-voltage part is also called a low-voltage control system. For the circuit board 1125 in the battery device 1100, it belongs to the low-voltage control part, and the circuit board 1125 is the core carrier for “signal processing, logic control, and state monitoring” in the battery device 1100, and the circuit board 1125 can be considered as a kind of low-voltage control component. The circuit board 1125 is used for low-voltage output of electrical signal. The output pole is used for high-voltage output.

[0120] Specifically, the busbar component 1126 is used to realize series or parallel connection between the plurality of battery cells 1121, the busbar component 1126 can be connected with the pole 11213 of the battery cell 1121 to realize electrical connection between the battery cells 1121; one busbar component 1126 can be arranged between two adjacent battery cells 1121.

[0121] The circuit board 1125 is used to monitor and control the working state of the battery cell 1121, the circuit board 1125 is electrically connected with each battery cell 1121 to collect voltage, temperature and other information. Generally, the circuit board 1125 and the busbar component 1126 are located at the top of the battery cell 1121.

[0122] At least one of the output pole second component 1123 and the limiting support 1124 is hot-pressed with the circuit board 1125 and the busbar component 1126 into an integrated structure by hot-pressing forming, for example, the output pole second component 1123, the circuit board 1125 and the busbar component 1126 are hot-pressed into an integrated structure; for another example, the limiting support 1124, the circuit board 1125 and the busbar component 1126 are hot-pressed into an integrated structure; for another example, the output pole second component 1123, the limiting support 1124, the circuit board 1125 and the busbar component 1126 are hot-pressed into an integrated structure. The integrated structure is beneficial to improve the integration between the components and facilitate the overall installation in the later stage.

[0123] Specifically, the battery device 1100 includes two hot-pressing films 1134, namely an upper hot-pressing film 11341 and a lower hot-pressing film 11342, which are used to hot-press the output pole second component 1123, the limiting support 1124, the circuit board 1125 and the busbar component 1126 into an integrated structure. Taking the output pole second component 1123, the limiting support 1124, the circuit board 1125 and the busbar component 1126 as an example, the upper hot-pressing film 11341 and the lower hot-pressing film 11342 are arranged above and below the circuit board 1125, the busbar component 1126, the output pole second component 1123 and the limiting support 1124 respectively to form an integrated structure.

[0124] In the embodiment, hot-pressing at least one of the output pole second component 1123 and the limiting support 1124 with the circuit board 1125 and the busbar component 1126 into an integrated structure can reduce the connection points between the components, reduce the contact resistance and the risk of failure, and improve the overall reliability of the battery device 1100. The hot-pressing forming process makes the components connect closely and the structure compact, which is beneficial to save the space inside the battery device 1100 and improve the energy density of the battery device 1100.

[0125] According to some embodiments of the present application, with reference to Figure 3 , Figure 4 and Figures 14-16As shown, the battery device 1100 further comprises an output pole cover 1127, which comprises a cover portion 11271 and a sleeve portion 11272 connected to the cover portion 11271, the cover portion 11271 covers at least the seat portion 11221 and the output pole second component 1123, and the sleeve portion 11272 is sleeved on the outside of the column portion 11222.

[0126] Specifically, the output pole cover 1127 can be made of an insulating material as a whole. One of the functions of the output pole cover 1127 is to insulate the output pole first component 1122 and the output pole second component 1123. For example, the battery device 1100 has a box cover portion 1111, and the output pole cover 1127 is located between the box cover portion 1111 and the output pole first component 1122 and the output pole second component 1123, thereby playing an insulating role. The lower surface of the output pole cover 1127 can be attached to the upper surface of the output pole second component 1123.

[0127] Since the output pole first component 1122 comprises the seat portion 11221 and the column portion 11222, the output pole cover 1127 comprises the cover portion 11271 corresponding to the seat portion 11221 and the sleeve portion 11272 corresponding to the column portion 11222. The cover portion 11271 can cover at least the seat portion 11221 and the output pole second component 1123, thereby playing an insulating role. The sleeve portion 11272 is sleeved on the outside of the column portion 11222, and the inner diameter of the sleeve portion 11272 is matched with the outer diameter of the column portion 11222, thereby playing an insulating and protective role for the column portion 11222.

[0128] The cover portion 11271 and the sleeve portion 11272 can be integrally formed as a whole, or the cover portion 11271 and the sleeve portion 11272 can be assembled and connected in a detachable manner.

[0129] In the embodiment, the output pole cover 1127 can play an electrical insulation role, thereby reducing the risk of short circuit between the column portion 11222, the seat portion 11221, the output pole second component 1123 and surrounding electrical components. In addition, the output pole cover 1127 plays a protective role for the seat portion 11221 and the output pole second component 1123, thereby preventing dust, water vapor and the like from entering the connection position and affecting the electrical conductivity and connection reliability. Furthermore, the sleeve portion 11272 is sleeved on the outside of the column portion 11222, thereby playing a supporting and protective role for the column portion 11222, reducing the risk of damage to the column portion 11222 caused by external force impact, and reducing the risk of electric shock caused by accidental touch of the column portion 11222.

[0130] According to some embodiments of the present application, with reference to Figure 16As shown, the cover portion 11271 has an assembly hole 11275, the sleeve portion 11272 is arranged on the assembly hole 11275, the edge side 11232 of the output pole second component 1123 is close to the assembly hole 11275, and a gap L is formed between the edge side 11232 and the hole wall 11274 of the assembly hole, and the value of the gap L is greater than 0 mm.

[0131] Specifically, the assembly hole 11275 is a through hole structure arranged on the cover portion 11271 of the output pole cover 1127 for assembling the sleeve portion 11272, and a part of the output pole second component 1123 extends below the cover portion 11271 and is close to the assembly hole 11275, so that the edge side 11232 is formed at the edge (or the hole wall 11274 of the assembly hole) of the output pole second component 1123 close to the assembly hole 11275, and the edge side 11232 is the closest position area of the output pole second component 1123 to the assembly hole 11275.

[0132] Since the battery device 1100 is installed with the box cover portion 1111 (the box cover portion 1111 of the battery device 1100), the box cover portion 1111 is above the output pole cover 1127, and considering the insulation reliability and the risk of short circuit between the output pole second component 1123 and the box cover portion 1111, the output pole second component 1123 and the box cover portion 1111 should have sufficient creepage distance.

[0133] In this example, the gap L is arranged between the edge side 11232 of the output pole second component 1123 and the hole wall 11274 of the assembly hole, and the value of the gap L is greater than 0 mm, and generally, the range of the gap L can be 1.5 mm-5 mm. It can be seen that the edge side 11232 of the output pole second component 1123 does not exceed the edge of the assembly hole 11275, the creepage distance is increased, and thus the insulation failure and short circuit risk between the output pole second component 1123 and the box cover portion 1111 is effectively reduced, and the stable operation of the battery device 1100 and the battery device 1100 is ensured.

[0134] In this embodiment, by controlling the gap L between the edge side 11232 of the output pole second component 1123 and the hole wall 11274 of the assembly hole, the insulation failure and short circuit risk between the output pole second component 1123 and the box cover portion 1111 can be effectively reduced, and the stable operation of the battery device 1100 and the battery device 1100 is ensured.

[0135] According to some embodiments of the present application, with reference to Figures 3-5 and Figure 15As shown, the battery device 1100 further comprises a jumper plate assembly 1128 electrically connected to the circuit board 1125, and the cover part 11271 has an avoiding hole 11273 formed at a position corresponding to the jumper plate assembly 1128, the cover part 11271 is arranged on the jumper plate assembly 1128, and the jumper plate assembly 1128 is at least partially arranged in the avoiding hole 11273.

[0136] Specifically, the jumper plate assembly 1128 is a conductive part for realizing circuit connection in the battery device 1100, and the jumper plate assembly 1128 also belongs to one of the low-voltage control parts in the low-voltage (control) part of the battery device 1100, and belongs to part of the low-voltage control circuit of the battery device 1100.

[0137] The jumper plate assembly 1128 can be made of a combination of metal materials (such as copper, aluminum or their alloys) and insulating materials, and the surface of the jumper plate assembly 1128 can be treated by tin plating, nickel plating, etc. to enhance the conductivity and corrosion resistance. The shape of the jumper plate assembly 1128 can be flat or have a bending structure according to the internal circuit layout design of the battery device 1100 to adapt to different connection requirements.

[0138] The jumper plate assembly 1128 is used for connection between the battery device 1100 and the circuit board 1125, thereby playing a role in transmitting electrical signals. For example, the signal output end on the circuit board 1125 is located at the end, and the end can be electrically connected to the jumper plate assembly 1128 through a line to transmit signals to the jumper plate assembly 1128, and the jumper plate assembly 1128 is formed with a conductive part (or interface structure) of an external circuit, thereby realizing the purpose of integrated signal transmission.

[0139] Generally, the jumper plate assembly 1128 can be used for conducting voltage, temperature and other monitoring signals of the battery monomer 1121 by connection with the circuit board 1125 to realize centralized transmission of signals and assist in realizing precise monitoring of the working state of the battery device 1100.

[0140] The jumper assembly 1128 can be disposed on the top of the battery cell 1121. The cover portion 11271 of the output terminal cover 1127 can cover the jumper assembly 1128. Since the jumper assembly 1128 has conductive parts for connecting to external circuits, the cover portion 11271 needs to have clearance holes 11273 corresponding to the positions of the conductive parts on the jumper assembly 1128, so that the cover portion 11271 can cover the jumper assembly. The jumper assembly 1128 is positioned on the cover portion 11271, with at least a portion (specifically the conductive portion) of the jumper assembly 1128 disposed within the clearance hole 11273, so that the conductive portion (or working portion) of the jumper assembly 1128 can be exposed within the clearance hole 11273, thereby preventing the cover portion 11271 from interfering with the conductive portion of the jumper assembly 1128 and ensuring that the normal operation of the jumper assembly 1128 is not interfered with by the cover portion 11271.

[0141] As part of the circuit system of the battery device 1100, the jumper assembly 1128, together with the circuit board 1125, forms a complete conductive network, enabling the electrical energy of the battery cell 1121 to be transmitted along the designed path, while also meeting the transmission requirements of monitoring signals.

[0142] In this embodiment, the clearance hole 11273 ensures that the output cover 1127 covers the base portion 11221 and the second output component 1123 without interfering with the normal operation of the jumper assembly 1128, thus guaranteeing the circuit connection function of the jumper assembly 1128. The partial coverage of the jumper assembly 1128 by the cover portion 11271 also provides a certain degree of protection, reducing the impact of external factors on it.

[0143] According to some embodiments of this application, refer to Figure 4 and Figure 5 As shown, the jumper assembly 1128 is disposed on the limiting bracket 1124, and the cover portion 11271 covers the jumper assembly 1128 and the limiting bracket 1124.

[0144] Specifically, the jumper assembly 1128 can be configured on the limit bracket 1124 and can be fixed by means of bonding, snap-fitting, bolt connection, etc.

[0145] The cover part 11271 of the output pole cover 1127 needs to be covered on the limiting support 1124, and the jumper plate assembly 1128 is arranged on the limiting support 1124. Therefore, the cover part 11271 needs to be provided with the above-mentioned avoiding hole 11273 corresponding to the position of the jumper plate assembly 1128, so that the cover part 11271 can be covered on the limiting support 1124 and the jumper plate assembly 1128, and the jumper plate assembly 1128 is at least partially (specifically, the conductive part) arranged in the avoiding hole 11273 of the cover part 11271, so that the conductive part (or working part) on the jumper plate assembly 1128 can be exposed in the avoiding hole 11273, thereby avoiding the interference between the cover part 11271 and the conductive part on the jumper plate assembly 1128, and ensuring the normal work of the jumper plate assembly 1128.

[0146] In the embodiment, the cover part 11271 can be covered on the limiting support 1124 and the jumper plate assembly 1128, and the avoiding hole 11273 can be provided to avoid the conductive part of the jumper plate assembly 1128, so as to protect the limiting support 1124 and the jumper plate assembly 1128 and ensure the normal work of the jumper plate assembly 1128.

[0147] According to some embodiments of the present application, referring to Figure 17 The battery device 1100 further includes a cover film 1129, which is covered on the seat part 11221, or the cover film 1129 is covered on the seat part 11221 and the output pole second part 1123.

[0148] Specifically, the cover film 1129 is made of insulating and temperature-resistant material, such as PET (Polyethylene Terephthalate) film, polyimide film, etc. The PET film is a film made of polyethylene terephthalate as raw material. The cover film 1129 can be covered on the seat part 11221, or the cover film 1129 is covered on the seat part 11221 and the output pole second part 1123. The cover film 1129 can be covered on the corresponding part by pasting or hot pressing, etc., to form a tight fit.

[0149] The cover film 1129 plays an insulating and isolating role, which can reduce the risk of short circuit between the seat part 11221 and the output pole second part 1123 and other metal parts, and can also block dust and water vapor to protect the surface of the seat part 11221 and the output pole second part 1123 from corrosion, thereby prolonging the service life of the seat part 11221 and the output pole second part 1123. The use of the cover film 1129 can also reduce the friction and wear between the seat part 11221 and the output pole second part 1123 and other parts.

[0150] In the case that the battery device 1100 is provided with the cover film 1129, the battery device 1100 can not be provided with the output pole cover 1127, that is, the cover film 1129 can replace the output pole cover 1127 to play the role of insulation and protection for the seat part 11221 and the output pole second part 1123.

[0151] In the embodiment, compared with the output pole cover 1127, the cover film 1129 has a simpler structure, is convenient to manufacture and install, and is conducive to reducing the production cost of the battery device 1100.

[0152] According to some embodiments of the present application, referring to FIG. 1 and FIG. 2, the plurality of battery monomers 1121 are arranged in a stacked manner along the first direction X and form two ends; the box body 1110 further comprises a limiting piece 1130, which is arranged at one of the two ends along the first direction X; and the seat part 11221 is at least partially connected to the limiting piece 1130. Figures 3-5 Specifically, the limiting piece 1130 can be provided with at least one, and generally, the limiting piece 1130 can be provided with two. The plurality of battery monomers 1121 are arranged in a stacked manner along the first direction X, and one limiting piece 1130 is arranged at each end of the battery device 1100, and the limiting piece 1130 limits the battery monomers 1121 at the two ends. The limiting piece 1130 can be made of metal or high-strength plastic. The limiting piece 1130 can be understood as an end plate, or can be understood as an expansion beam. The end plate or the expansion beam limits the battery monomers 1121 at the two ends of the battery monomer group 1120.

[0153] For one of the limiting pieces 1130, the seat part 11221 is at least partially connected to the limiting piece 1130. The limiting piece 1130 can support and hold the seat part 11221 (i.e., the output pole first part 1122), and the limiting piece 1130 can also limit and position the seat part 11221.

[0154] The seat part 11221 can be directly placed on the limiting piece 1130, or the seat part 11221 and the limiting piece 1130 can be detachably connected through fasteners or the like.

[0155] In the embodiment, the seat part 11221 is connected to the limiting piece 1130, so that the output pole first part 1122 obtains more stable support and improves the anti-vibration and anti-impact capability.

[0156] According to some embodiments of the present application, referring to FIG. 1 and FIG. 2, the limiting piece 1130 is formed with an inner recess 11301 on the side facing the seat part 11221, and the seat part 11221 is at least partially arranged in the inner recess 11301.

[0157] Figures 3-5 Figure 18 The limiting piece 1130 is formed with an inner recess 11301 on the side facing the seat part 11221, and the seat part 11221 is at least partially arranged in the inner recess 11301.​​

[0158] Specifically, the inner recess 11301 can be understood as a groove structure formed on the limiting piece 1130, for example, the side of the limiting piece 1130 facing the seat body 11221 is understood as the top of the limiting piece 1130, then the top of the limiting piece 1130 is formed with the inner recess 11301, and the inner recess 11301 is located in the middle region of the top of the limiting piece 1130. When the seat body 11221 is assembled with the limiting piece 1130, the bottom of the seat body 11221 can be attached to the groove bottom of the groove structure, and at least part of the seat body 11221 can be accommodated in the groove structure, that is, in the inner recess 11301.

[0159] For example, the first part 11223 of the seat body 11221 is accommodated in the inner recess 11301, so as to lower the installation position of the columnar part 11222, which is beneficial to save the occupied space of the output pole first component 1122 in the height direction of the battery device 1100, thereby improving the space utilization of the battery device 1100 in the height direction.

[0160] The provision of the inner recess 11301 provides accurate positioning for the seat body 11221, so that the installation position accuracy of the seat body 11221 in the battery device 1100 is improved. At the same time, the inner recess 11301 plays a restraining role on the seat body 11221, further limiting the displacement of the seat body 11221, and improving the stability of the connection between the output pole first component 1122 and other components.

[0161] In the embodiment, by providing the inner recess 11301 on the top of the limiting piece 1130, the seat body 11221 can be at least partially configured inside the inner recess 11301, thereby being beneficial to reduce the occupied space of the output pole first component 1122 in the height direction of the battery device 1100, and being beneficial to improve the space utilization.

[0162] According to some embodiments of the present application, as shown in Figure 4 , Figure 5 , Figure 18 and Figure 19 , the battery device 1100 further comprises an insulating sheet 1131, and the insulating sheet 1131 is at least configured between the seat body 11221 and the inner recess 11301.

[0163] Specifically, the insulating sheet 1131 plays an insulating role between the seat body 11221 and the inner recess 11301, and the insulating sheet 1131 can be made of insulating materials such as mica sheet and plastic sheet.

[0164] The insulating sheet 1131 can be laid on the bottom and side of the inner recess 11301 to isolate the seat portion 11221 from the surface of the inner recess 11301. Of course, the insulating sheet 1131 can also extend to the outside of the inner recess 11301, for example, the insulating sheet 1131 can extend to the top surface of the limiting piece 1130 from the inner recess 11301.

[0165] In the embodiment, the insulating sheet 1131 plays an insulating isolation role, so that the seat portion 11221 is not in electrical conduction with the end plate component, thereby reducing the probability of short circuit failure. In addition, the insulating sheet 1131 can also reduce the friction and wear between the seat portion 11221 and the limiting piece 1130.

[0166] According to some embodiments of the present application, referring to Figures 2-4 The limiting piece 1130 is a die-cast end plate, and the box body 1110 further includes a side plate 1133, and the die-cast end plate is connected with the side plate 1133 to jointly enclose the accommodation space 1113.

[0167] Specifically, the box body 1110 can further include a side plate 1133 located on opposite sides of the battery device 1100, and the limiting piece 1130 and the side plate 1133 are connected to jointly enclose the accommodation space 1113 accommodating the battery monomer 1121. The limiting piece 1130 and the side plate 1133 can be connected by bolts, buckles, rivets, etc., and the limiting piece 1130 and the side plate 1133 jointly constrain the stacked battery monomers 1121.

[0168] The limiting piece 1130 can be a die-cast part, i.e., the limiting piece 1130 is a die-cast end plate, and the die-cast end plate and the side plate 1133 are riveted to improve the connection reliability.

[0169] In the embodiment, the limiting piece 1130 is a die-cast end plate, and the die-cast end plate and the side plate are connected to form the box body 1110, so that the structural stability of the box body 1110 is improved.

[0170] According to some embodiments of the present application, referring to Figures 20-22 The plurality of battery monomers 1121 are arranged in a stacked manner along the first direction X, and the battery monomer 1121 located at the end is provided with an explosion-proof valve 11211 on the side facing the seat portion 11221; at least part of the seat portion 11221 is arranged opposite the explosion-proof valve 11211; and the battery device 1100 further includes an insulating cover 1132, at least part of the insulating cover 1132 is arranged between the explosion-proof valve 11211 and the at least part of the seat portion 11221.

[0171] Specifically, the plurality of battery cells 1121 are stacked along the first direction X, and therefore, in the battery device 1100, there is one battery cell 1121 located at the end of the battery device 1100, and the outer side of the battery cell 1121 located at the end is the limiting piece 1130. The output pole first component 1122 can be arranged on the upper portion of the battery cell 1121 located at the end, or the output pole first component 1122 can be arranged on the upper portion of the battery cell 1121 located at the end and the upper portion of the limiting piece 1130.

[0172] The explosion-proof valve 11211 is a safety protection device integrated on the battery cell 1121, and is used to release the pressure and gas generated inside the battery cell 1121 due to abnormal conditions (such as overcharging, short circuit, high temperature, puncture, etc.), and to reduce the risk of thermal runaway of the battery cell 1121.

[0173] Generally, the side of the battery cell 1121 facing the seat portion 11221 can be understood as the top of the battery cell 1121, that is, the explosion-proof valve 11211 is located at the top of the battery cell 1121, and the top of the battery cell 1121 located at the end is provided with the explosion-proof valve 11211, and the output pole first component 1122 (specifically, the second part 11224 of the seat portion 11221) and the output pole second component 1123 are located in the upper space of the battery cell 1121 at the end, and therefore, the output pole first component 1122 and the output pole second component 1123 have the risk of short-circuiting with the explosion-proof valve 11211.

[0174] In view of the existence of the above-mentioned risk, in the case where the second part 11224 of the seat portion 11221 is located above the explosion-proof valve 11211, the battery device 1100 is provided with an insulating cover 1132 made of insulating material, which is arranged between the explosion-proof valve 11211 and the second part 11224 to play an insulating role. Of course, the coverage area of the insulating cover 1132 can be further increased, and the insulating cover 1132 can extend to the surface of the battery cell 1121.

[0175] The insulating cover 1132 is installed between the explosion-proof valve 11211 and the second part 11224 of the seat portion 11221, and the insulating cover 1132 can be fixed on the battery cell 1121 or the seat portion 11221 by clamping or pasting, etc.

[0176] In addition, when the battery cell 1121 fails and the explosion-proof valve 11211 opens to release gas or substances, the insulating cover 1132 can block the direct contact of the second part 11224 of the seat portion 11221, thereby reducing the damage of the explosion-proof valve 11211 to the output pole first component 1122, and in addition, it can also reduce the problem of short circuit caused by the substances released by the explosion-proof valve 11211.

[0177] In this embodiment, the insulating cover 1132 can reduce the risk of short circuit between the first output electrode component 1122 and the explosion-proof valve 11211.

[0178] According to some embodiments of this application, refer to Figure 21 and Figure 22 As shown, the insulating cover 1132 includes a first sheet portion 11321 and a second sheet portion 11322 connected to the first sheet portion 11321. The first sheet portion 11321 and the second sheet portion 11322 are arranged at an angle. The first sheet portion 11321 is attached to the side wall of the battery cell 1121, and the second sheet portion 11322 is disposed between the explosion-proof valve 11211 and at least a portion of the seat portion 11221 (specifically the second portion 11224).

[0179] Specifically, the first piece 11321 and the second piece 11322 can be integrally formed sheet structures. The sheet structures are bent so that the first piece 11321 and the second piece 11322 are arranged at an angle, with the angle ranging from 80° to 100°, for example, 90°.

[0180] Both the first sheet portion 11321 and the second sheet portion 11322 are sheet-shaped. The first sheet portion 11321 is disposed in contact with the side wall of the end battery cell 1121. The first sheet portion 11321 can also be bonded to the battery cell 1121. The first sheet portion 11321 is located between the limiting member 1130 and the end battery cell 1121, so as to provide insulation between the battery cell 1121 and the limiting member 1130. The second sheet portion 11322 is arranged above the explosion-proof valve 11211 and between the explosion-proof valve 11211 and the second portion 11224, so as to provide insulation between the explosion-proof valve 11211 and the second portion 11224.

[0181] In this embodiment, the first piece 11321 is attached to the side wall, providing a stable support for the entire insulating cover 1132, so that the second piece 11322 can be reliably located between the explosion-proof valve 11211 and the second part 11224, and fully exert its protective function; the angled arrangement structure allows the insulating cover 1132 to be installed more stably on the battery cell 1121, further improving the protective effect of the insulating cover 1132.

[0182] According to some embodiments of this application, refer to Figure 23As shown, the battery device 1100 further comprises a circuit board 1125 and an information acquisition component 1135, the battery cell 1121 has a monitoring window 11214, the information acquisition component 1135 is arranged on the monitoring window 11214 and connected with the battery cell 1121; the circuit board 1125 comprises a main body part 11256 and a flange part 11251 both provided with circuit structures, the main body part 11256 is arranged in extension along a first direction X, the main body part 11256 is arranged opposite to the battery cell 1121 in a third direction Z, the main body part 11256 is respectively provided with opposite first and second sides 11253 and 11252 along a second direction Y, and the monitoring window 11214 is arranged close to the first side 11253; the flange part 11251 is connected to the second side 11252 of the main body part 11256, and the flange part 11251 extends from the second side 11252 to the first side 11253 and is electrically connected with the information acquisition component 1135; the first, second and third directions X, Y and Z are perpendicular to each other.

[0183] In order to realize the monitoring of the battery cell 1121, a monitoring window 11214 is usually opened on the top of the battery cell 1121, which is a reserved local opening or special area on the battery cell 1121 for monitoring the temperature of the battery cell 1121. Generally, the outer surface of the battery cell 1121 is usually wrapped with an insulating film, also known as a blue film, and the outside of the battery cell 1121 has a shell, which can be an aluminum shell. Therefore, the monitoring window 11214 is a through-hole structure formed on the blue film, which exposes the aluminum shell of the battery cell 1121, so that the flange part 11251 can be arranged on the monitoring window 11214. The information acquisition component 1135, such as a temperature sensor, is connected to the flange part 11251, so that the temperature sensor is in contact with the aluminum shell on the monitoring window 11214, thereby collecting the temperature of the battery cell 1121.

[0184] The information acquisition component 1135 is connected to the monitoring window 11214 for acquiring environmental information inside the battery cell 1121. For example, the information acquisition component 1135 can adopt a sensor, such as a temperature sensor, a current sensor or a voltage sensor, which is connected to the monitoring window 11214 to acquire temperature or current or voltage data on the surface or inside of the battery cell 1121.

[0185] The circuit board 1125 can acquire monitoring data through the information acquisition component 1135 to monitor and control the working state of the battery cell 1121. The circuit board 1125 is electrically connected with each battery cell 1121 for collecting voltage, current, temperature and other data.

[0186] The battery device 1100 has a high-voltage part and a low-voltage part, wherein the high-voltage part is used for delivering current, and the low-voltage part is used for control, and the low-voltage part is also called a low-voltage control system. For the circuit board 1125 in the battery device 1100, the part belonging to low-voltage control, the circuit board 1125 is a core carrier for "signal processing, logic control, and state monitoring" in the battery device 1100, and the circuit board 1125 can be considered as a low-voltage control component. The circuit board 1125 is used for low-voltage output of electrical signals. The output pole described below is a high-voltage output.

[0187] Specifically, the board surface of the circuit board 1125 is usually formed with a circuit structure. Generally, the circuit structure of the circuit board 1125 is composed of wires (copper foil), solder joints, components (resistors, capacitors, chips, etc.), and functional partitions, and the basic function is to establish a "path for electrical signals or energy". The circuit structure of the circuit board 1125 needs to be designed according to the function of the device. The circuit structures of different modules undertake specific tasks, for example, the circuit structure is divided into different areas (such as power area, control area, input and output area, etc.) according to functions, and different areas undertake different functions.

[0188] In this application, the circuit board 1125 has a preset area, and the preset circuit 11254 is formed on the preset area. The preset circuit 11254 is used to connect with the information acquisition component 1135, and the information acquisition component 1135 is connected at the position of the monitoring window 11214 of the battery monomer 1121.

[0189] Generally, the circuit board 1125 is located at the top of the battery monomer 1121, and the circuit board 1125 is arranged opposite to the battery monomer 1121. Specifically, the circuit board 1125 includes a main body part 11256 and a flange part 11251. The main body part 11256 forms a main part of the circuit board 1125, and the flange part 11251 is connected to the main body part 11256. The circuit structure is arranged on the main body part 11256 and the flange part 11251. The flange part 11251 can be considered as a preset area on the circuit board 1125, and the circuit structure on the flange part 11251 can be considered as the preset circuit 11254 described above, that is, the preset circuit 11254 is arranged on the flange part 11251.

[0190] The main body 11256 extends along the first direction X and is arranged opposite to the battery cell 1121 in the third direction Z. The circuit structure is usually arranged on the side of the main body 11256 facing the battery cell 1121. The main body 11256 has a first side 11253 and a second side 11252 opposite to each other along the second direction Y. The monitoring window 11214 is located near the first side 11253, that is, the first side 11253 and the monitoring window 11214 are arranged opposite to each other. The flange 11251 is connected to the second side 11252 of the main body 11256. The flange 11251 extends from the second side 11252 to the first side 11253 and is electrically connected to the information acquisition component 1135. Understandably, the flange 11251 has two opposite ends, namely a first end and a second end. The first end is connected to the main body 11256, and the second end extends to the monitoring window 11214. The second end is connected to the information acquisition component 1135 at the position of the monitoring window 11214, and covers the monitoring window 11214 to connect with the battery cell 1121.

[0191] The manufacturing process of circuit board 1125 is explained below, referring to... Figure 24 As shown, when the circuit board 1125 is in a blank state, the main body 11256 and the flange 11251 together form a sheet shape. The flange 11251 is located entirely on the second side 11252 of the main body 11256. However, when assembling this sheet-shaped circuit board 1125 with the battery cell 1121, the monitoring window 11214 of the battery cell 1121 can only be located on one side of the first side 11253 of the main body 11256, making it impossible for the flange 11251 to be paired with the monitoring window 11214. Therefore, it is necessary to improve the structure of the circuit board 1125 by modifying the flange 11251, which is equipped with a preset circuit 11254. A cutting gap is formed between 51 and the main body 11256, so that the flange 11251 can move partially relative to the main body 11256. That is, the first end of the flange 11251 is connected to the main body 11256, and the flange 11251 is rotated around the first end, so that the second end of the flange 11251 can extend to the first side 11253 of the main body 11256, and then the second end of the flange 11251 can be paired with the monitoring window 11214. The flange 11251 extends across the first side 11253 and the second side 11252 of the main body 11256.

[0192] In the embodiment, the folded portion 11251 of the circuit board 1125 is arranged with a circuit structure capable of being electrically connected with the information collection component 1135, and the folded portion 11251 is extended from the second side 11252 of the main body portion 11256 to the first side 11253, and the extended end of the folded portion 11251 is matched with the monitoring window 11214, so that the folded portion 11251 is adaptively connected with the monitoring window 11214 located at the first side 11253 of the main body portion 11256, the displacement of the preset circuit 11254 (i.e. the circuit connection area) is realized, and the overall replacement of the circuit board 1125 is not required, thereby reducing the modification and production cost and shortening the technical iteration cycle.

[0193] According to some embodiments of the present application, referring to Figure 6 As shown in the figure, the battery device 1100 further comprises a circuit board 1125 electrically connected with each battery monomer 1121, the circuit board 1125 is arranged on the side of the battery monomer 1121 close to the seat body portion 11221; the output pole second component 1123 has a sunken portion 11231, and the circuit board 1125 is connected to the output pole second component 1123 and limited in the sunken portion 11231.

[0194] For the circuit board 1125 and the connection design between the circuit board 1125 and the battery monomer 1121, details are not repeated here, and can be referred to the above embodiments.

[0195] For the output pole second component 1123, the output pole second component 1123 can be a plate structure, and the sunken portion 11231 is arranged on the output pole second component 1123. In one case, the sunken portion 11231 can be understood as a groove structure on the plate body, and the position area of the sunken portion 11231 is recessed inward compared to the surrounding area. In another case, the sunken portion 11231 can also be understood as a recessed area formed by stamping on the plate body, and the sunken portion 11231 is connected with the surrounding plate body by bending; in one case, the sunken portion 11231 is a thinned area on the plate surface of the output pole second component 1123.

[0196] The circuit board 1125 extends in the first direction X, and therefore has a region corresponding to the output pole second component 1123, and the circuit board 1125 overlaps the region of the output pole second component 1123. In consideration of the height of the circuit board 1125, in order not to affect the height of the circuit board 1125 when the circuit board 1125 crosses the output pole second component 1123, a sunken portion 11231 is arranged on the region of the output pole second component 1123 corresponding to the circuit board 1125, so that the circuit board 1125 can be located in the sunken portion 11231. In addition, the width dimension of the sunken portion 11231 matches the width dimension of the circuit board 1125, so that the sunken portion 11231 functions to limit the circuit board 1125.

[0197] In the embodiment, by arranging the sunken portion 11231 on the output pole second component 1123, the circuit board 1125 can be accommodated and limited, which is conducive to matching the height of the circuit board 1125 and improving the stability of the circuit board 1125.

[0198] According to some embodiments of the present application, as shown in Figure 5 、 Figure 10 、 Figure 11 The limiting support 1124 includes a limiting plate body portion 11242 and a limiting structure 11241 connected to the edge of the limiting plate body portion 11242. The limiting plate body portion 11242 covers part of the battery monomer 1121, and the side plate surface of the limiting plate body portion 11242 facing the battery monomer 1121 is provided with a rib structure 11243.

[0199] For the limiting support 1124, one of the functions of the limiting support 1124 is to limit the output pole second component 1123 and the output pole first component 1122 through the limiting structure 11241, so the limiting structure 11241 needs to be arranged on the limiting support 1124. Another function of the limiting support 1124 is to cover the battery monomer 1121 and also to insulate the battery monomer 1121 to a certain extent. Therefore, the limiting plate body portion 11242 needs to be arranged on the limiting support 1124, and the limiting plate body portion 11242 can be understood as a plate body structure.

[0200] The limiting structure 11241 and the limiting plate body portion 11242 can be integrally formed or welded, or the limiting structure 11241 can be detachably connected to the limiting plate body portion 11242.

[0201] Considering the plate thickness of the limiting plate body portion 11242, and the large area, it is easy to deform, therefore, the rib structure 11243 is arranged on the limiting plate body portion 11242, the rib structure 11243 can be formed by stamping, thereby facilitating to enhance the anti-deformation ability of the limiting plate body portion 11242. The rib structure 11243 can adopt the form of raised stripes or grid, etc.

[0202] In order not to affect the fit between the upper surface of the limiting support 1124 (specifically the limiting plate body portion 11242) and the lower surface of the output pole cover 1127, therefore, the rib structure 11243 is arranged on the side of the limiting plate body portion 11242 facing the battery monomer 1121. In addition, the rib structure 11243 can disperse the pressure of the limiting plate body portion 11242 on the top of the battery monomer 1121, and reduce the risk of damaging the battery monomer 1121 by excessive local pressure.

[0203] In the embodiment, by arranging the rib structure 11243 on the side of the limiting plate body portion 11242 facing the battery monomer 1121, thereby facilitating to enhance the anti-deformation ability of the limiting support 1124, and making the limiting support 1124 have better supporting and limiting effect.

[0204] In one specific embodiment, referring to Figures 2-24As shown, the battery device 1100 comprises a box body 1110, an output pole and a plurality of battery monomers 1121, wherein the box body 1110 has a containing space 1113; the plurality of battery monomers 1121 are arranged in a stacked manner to form a battery monomer group 1120; the output pole comprises an output pole first component 1122, the output pole first component 1122 comprises a seat body part 11221 and a column part 11222, the column part 11222 is connected to the seat body part 11221 and protrudes from the surface of the seat body part 11221; the seat body part 11221 is electrically connected to the battery monomer 1121; the output pole further comprises an output pole second component 1123, the output pole second component 1123 is connected to the pole column 11213 of the battery monomer 1121 and the seat body part 11221 respectively, and the seat body part 11221 is fixedly connected to the output pole second component 1123; the seat body part 11221 is a laminated sheet structure; the seat body part 11221 comprises a first part 11223, a bending part 11225 and a second part 11224, the bending part 11225 is connected between the first part 11223 and the second part 11224, and the first part 11223 and the second part 11224 are arranged in a staggered manner; the column part 11222 is connected to the first part 11223, and the output pole second component 1123 is connected to the second part 11224; the output pole second component 1123 is lapped on the second part 11224 and welded with the second part 11224; the box body 1110 comprises a frame body 1115 and a support plate 1114 connected to the frame body 1115, and the frame body 1115 and the support plate 1114 jointly enclose the containing space 1113; the output pole is arranged on the side of the battery monomer 1121 away from the support plate, and the column part 11222 is arranged in an extending manner away from the support plate; the battery device 1100 further comprises a limiting support 1124, the limiting support 1124 has a limiting structure 11241, the limiting structure 11241 is connected to the output pole second component 1123 and / or the seat body part 11221; the battery device 1100 further comprises an output pole cover 1127, the output pole cover 1127 comprises a cover body part 11271 and a sleeve part 11272 connected to the cover body part 11271, the cover body part 11271 covers at least the seat body part 11221 and at least part of the output pole second component 1123, and the sleeve part 11272 is sleeved on the outside of the column part 11222; the battery device 1100 further comprises a jumper plate assembly 1128 electrically connected to a circuit board 1125, the cover body part 11271 has an avoiding hole 11273 corresponding to the position of the jumper plate assembly 1128, the cover body part 11271 covers the jumper plate assembly 1128, and the jumper plate assembly 1128 is at least partially arranged in the avoiding hole 11273; the plurality of battery monomers 1121 are arranged in a stacked manner along a first direction X and form two end portions; the box body 1110 comprises at least a limiting piece 1130, along the first direction X, the limiting piece 1130 is arranged at one of the end portions; the seat body part 11221 is at least partially connected to the limiting piece 1130.The side of the limiting piece 1130 facing the seat body 11221 is formed with an inner recess 11301, and the seat body 11221 is at least partially arranged in the inner recess 11301; the battery device 1100 further comprises an insulating sheet 1131, which is at least arranged between the seat body 11221 and the inner recess 11301; the plurality of battery monomers 1121 are arranged in a stack along the first direction X, and the battery monomer 1121 at the end is provided with an explosion-proof valve 11211 on the side facing the seat body 11221; at least part of the seat body 11221 is arranged opposite the explosion-proof valve 11211; the battery device 1100 further comprises an insulating cover 1132, at least part of the insulating cover 1132 is arranged between the explosion-proof valve 11211 and the at least partial seat body 11221; the battery device 1100 further comprises a circuit board 1125 and an information acquisition component 1135, the battery monomer 1121 has a monitoring window 11214, and the information acquisition component 1135 is arranged on the monitoring window 11214 and connected with the battery monomer 1121; the circuit board 1125 comprises a main body 11256 and a flange 11251, both of which are provided with a circuit structure, the main body 11256 is arranged in extension along the first direction X, and the main body 11256 is arranged opposite the battery monomer 1121 in the third direction Z, the main body 11256 is provided with opposite first and second sides 11253 and 11252 along the second direction Y, and the monitoring window 11214 is arranged close to the first side 11253; the flange 11251 is connected to the second side 11252 of the main body 11256, and the flange 11251 extends from the second side 11252 to the first side 11253 and is electrically connected with the information acquisition component 1135; the first, second and third directions X, Y and Z are perpendicular to each other.

[0205] According to some embodiments of the present application, referring to Figure 1 The present application also provides a power consumption device, which comprises the battery device 1100 in the above embodiments, and the battery device 1100 is used for storing or providing electric energy.

[0206] The technical solutions described in the embodiments of the present application are applicable to various power consumption devices using battery monomers, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles 1000, ships and spacecraft, etc., such as aircraft, rockets, space shuttles and spacecraft, etc.

[0207] The example of the power consumption device in the present application is based on the example of the above battery device 1100, and the example of the power consumption device contains all the technical effects of the example of the above battery device 1100, which will not be described again.

[0208] According to some embodiments of the present application, the present application also provides an energy storage device, which comprises the power conversion device and the battery device 1100 in the above embodiments, and the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0209] Specifically, the energy storage device can comprise one or more battery clusters to improve the voltage and capacity of the energy storage device. The battery cluster can comprise a plurality of battery devices 1100, which are connected in series through busbar components to improve the voltage of the energy storage device. When the energy storage device comprises a plurality of battery clusters, the plurality of battery clusters are connected in parallel to improve the capacity of the energy storage device.

[0210] The energy storage device can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems, or temporary power supply systems, etc. The energy storage device can store electrical energy as needed and output electrical energy at appropriate times. For example, the energy storage device can store electrical energy during the low electricity consumption period, and provide electrical energy for related users or electrical equipment during the peak electricity consumption period. The energy storage system provided by the embodiments of the present application can be any power system that needs to use the energy storage device.

[0211] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0212] In some embodiments, the energy storage device can comprise a cabinet body and one or more battery clusters, which are accommodated in the cabinet body.

[0213] In some embodiments, the energy storage device can comprise a thermal management module, a master control module, a general control module, a power distribution module, and a fire-fighting module, etc.

[0214] As an example, the thermal management module can comprise a liquid cooling unit, which provides cooling liquid for adjusting the temperature of the battery monomer to each battery device 1100 through pipelines.

[0215] As an example, the master control module can serve as a battery management unit of the battery cluster, which is used to monitor and manage the battery cluster. The master control module can monitor the current, voltage, power, or temperature, etc. of the battery cluster. For example, the charging and discharging current, voltage, etc. of the battery cluster can be controlled. The master control module comprises a slave battery management unit (SBMU), a fusion switch, and other modules.

[0216] As an example, the master control module can be used as a battery management unit of the energy storage device to monitor and manage the energy storage device. The master control module can monitor information such as current, voltage, power, state of charge, or temperature of the energy storage device. For example, the charging and discharging current and voltage of the energy storage device can be controlled. As an example, the master control module includes an insulation monitoring module IMM (Insulation Monitoring Module, IMM), a master battery management unit MBMU (Master Battery Management Unit, MBMU), an Ethernet ETH (EtherNet, ETH), and an optical fiber conversion module.

[0217] As an example, the fire control module includes a control panel, a detector, an alarm device, etc., for detecting, alarming, or extinguishing the energy storage system. As an example, the power distribution module can be used to distribute power to modules that need power in the energy storage device.

[0218] According to some embodiments of the present application, the present application also provides an energy storage system, which includes a power conversion device and an energy storage device in the above embodiments, and the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0219] In some embodiments, the energy storage system can include one or more energy storage devices and a power conversion device (Power Converter System, PCS) for connecting between the power generation device and the energy storage device. The power generation device is used to generate electric energy, and the electric energy generated by the power generation device can be stored in the energy storage device through the power conversion device. As an example, the power generation device can be a solar panel, a hydroelectric power generation device, a thermal power generation device, a wind power generation device, etc. The specific type of power generation device is not limited in the present application.

[0220] According to some embodiments of the present application, the present application also provides a charging network, which includes a charging pile and an energy storage device in the above embodiments or an energy storage system in the above embodiments, and the energy storage device is used to provide electric energy for the charging pile.

[0221] For example, the charging network includes a charging pile and an energy storage device, and the charging pile is electrically connected to the energy storage device, and the energy storage device is used to provide electric energy for the charging pile. The charging pile and the battery device 1100 in the energy storage device are electrically connected through a cable, and the battery device 1100 can provide the electric energy stored by itself to the charging pile. The charging pile has one or more connectors for connecting with an electric device (such as a vehicle 1000), so as to charge the electric device.

[0222] The energy storage device can be located inside the charging pile (such as a charging and storage integrated machine), or can be located outside the charging pile.

[0223] The above merely preferred embodiments of the present application have been described, and the technical principles of the present application have been specifically described, and these descriptions are only for explaining the principles of the present application, and cannot be explained as the limitation of the protection scope of the present application in any way. Based on the explanations herein, any modification, equivalent replacement and improvement made within the spirit and principle of the present application, and other specific embodiments of the present application which can be thought by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. A battery device (1100) characterized by, The battery device (1100) comprises: a box body (1110) having a containing space (1113); a plurality of battery cells (1121) arranged in stacks to form a battery cell group (1120); an output pole comprising an output pole first part (1122), the output pole first part (1122) comprising a seat part (11221) and a column part (11222) connected to the seat part (11221) and protruding from the surface of the seat part (11221); the seat part (11221) being electrically connected to the battery cell (1121).

2. The battery device (1100) of claim 1, wherein, The output pole further comprises an output pole second part (1123) connected to the pole column (11213) of the battery cell (1121) and the seat part (11221) respectively, the seat part (11221) being fixedly connected to the output pole second part (1123).

3. The battery device (1100) according to claim 1 or 2, characterized in that The seat part (11221) is a laminated sheet structure.

4. The battery device (1100) of claim 2, wherein, The seat part (11221) comprises a first part (11223), a bending part (11225) and a second part (11224), the bending part (11225) being connected between the first part (11223) and the second part (11224); the first part (11223) and the second part (11224) are arranged in a staggered manner along the height direction of the battery cell (1121); the column part (11222) is connected to the first part (11223), and the output pole second part (1123) is connected to the second part (11224).

5. The battery device (1100) of claim 4, wherein, The output pole second part (1123) is overlapped on the second part (11224) and welded with the second part (11224).

6. The battery device (1100) according to any one of claims 1-5, characterized in that The box body (1110) comprises a frame body (1115) and a support plate (1114) connected to the frame body (1115), the frame body (1115) and the support plate (1114) together define the containing space (1113); the output pole is arranged on the side of the battery cell (1121) away from the support plate (1114), and the column part (11222) is arranged in an extending manner away from the support plate (1114).

7. The battery device (1100) according to any one of claims 2, 4 and 5, characterized in that, The battery device (1100) further comprises a limiting support (1124) having a limiting structure (11241) connected to the output pole second part (1123) and / or the seat part (11221).

8. The battery device (1100) of claim 7, wherein, The battery device (1100) further comprises a circuit board (1125) and a busbar component (1126), a plurality of the battery cells (1121) are connected in electricity through the busbar component (1126); at least one of the output pole second component (1123) and the limiting support (1124) is integrally formed with the circuit board (1125) and the busbar component (1126) by hot pressing.

9. The battery device (1100) according to claim 7 or 8, characterized in that The limiting support (1124) comprises a limiting plate body part (11242) and the limiting structure (11241) connected to the edge of the limiting plate body part (11242), the limiting plate body part (11242) covers part of the battery cell (1121), and the side plate surface of the limiting plate body part (11242) facing the battery cell (1121) is provided with a rib structure (11243).

10. The battery device (1100) of claim 8, wherein, The battery device (1100) further comprises an output pole cover (1127), the output pole cover (1127) comprises a cover body part (11271) and a sleeve part (11272) connected to the cover body part (11271), the cover body part (11271) covers at least the seat body part (11221) and at least part of the output pole second component (1123), and the sleeve part (11272) covers the outside of the column part (11222).

11. The battery device (1100) of claim 10, wherein, The cover body part (11271) is provided with an assembly hole (11275), the sleeve part (11272) is arranged on the assembly hole (11275), the output pole second component (1123) is provided with an edge side (11232) close to the assembly hole (11275), and a gap (L) is formed between the edge side (11232) and the hole wall (11274) of the assembly hole.

12. The battery device (1100) of claim 10, wherein, The battery device (1100) further comprises a jumper plate assembly (1128) electrically connected to the circuit board (1125), the cover body part (11271) is provided with a avoiding hole (11273) corresponding to the position of the jumper plate assembly (1128), the cover body part (11271) covers the jumper plate assembly (1128), and the jumper plate assembly (1128) is at least partially arranged in the avoiding hole (11273).

13. The battery device (1100) of claim 12, wherein, The jumper plate assembly (1128) is arranged on the limiting support (1124), and the cover body part (11271) covers the jumper plate assembly (1128) and the limiting support (1124).

14. The battery device (1100) according to any one of claims 1-9, characterized by The battery device (1100) further comprises a cover film (1129), and the cover film (1129) covers the seat body part (11221).

15. The battery device (1100) according to any one of claims 1 to 13, characterized in that A plurality of the battery cells (1121) are arranged in a first direction (X) and form two end portions; the box (1110) comprises at least a limiting piece (1130), and the limiting piece (1130) is arranged at one of the end portions in the first direction (X); and the seat body part (11221) is at least partially connected to the limiting piece (1130).

16. The battery device (1100) of claim 15, wherein, The limiting piece (1130) is formed with an inner recess (11301) on the side facing the seat body (11221), and the seat body (11221) is at least partially arranged in the inner recess (11301).

17. The battery device (1100) of claim 16, wherein, The battery device (1100) further comprises an insulating sheet (1131) arranged at least between the seat body (11221) and the inner recess (11301).

18. The battery device (1100) of claim 15, wherein, The limiting piece (1130) is a die-cast end plate, and the box body (1110) further comprises a side plate (1133), and the die-cast end plate is connected with the side plate (1133) to jointly form the accommodating space (1113).

19. The battery device (1100) according to any one of claims 1-18, characterized by The plurality of battery monomers (1121) are arranged in a stack along a first direction (X), and the battery monomers (1121) at the end are provided with explosion-proof valves (11211) on the side facing the seat body (11221); at least part of the seat body (11221) is arranged opposite to the explosion-proof valve (11211); and the battery device (1100) further comprises an insulating cover (1132), and at least part of the insulating cover (1132) is arranged between the explosion-proof valve (11211) and the at least part of the seat body (11221).

20. The battery device (1100) of claim 19, wherein, The insulating cover (1132) comprises a first sheet body (11321) and a second sheet body (11322) connected with the first sheet body (11321), the first sheet body (11321) and the second sheet body (11322) are arranged at an angle, the first sheet body (11321) is attached to the side wall of the battery monomer (1121), and the second sheet body (11322) is arranged between the explosion-proof valve (11211) and the at least part of the seat body (11221).

21. The battery device (1100) according to any one of claims 1-20, characterized by The battery device (1100) further comprises a circuit board (1125) and an information acquisition component (1135), the battery monomer (1121) is provided with a monitoring window (11214), the information acquisition component (1135) is arranged on the monitoring window (11214) and connected with the battery monomer (1121); the circuit board (1125) comprises a main body part (11256) and a turn-up part (11251) both provided with circuit structures, the main body part (11256) is arranged in extension along a first direction (X), the main body part (11256) is arranged opposite to the battery monomer (1121) along a third direction (Z), the main body part (11256) is respectively provided with opposite first and second sides (11253 and 11252) along a second direction (Y), and the monitoring window (11214) is arranged close to the first side (11253); the turn-up part (11251) is connected to the second side (11252) of the main body part (11256), the turn-up part (11251) extends from the second side (11252) to the first side (11253) and is electrically connected with the information acquisition component (1135); the first direction (X), the third direction (Z) and the second direction (Y) are perpendicular to each other in pairs.

22. The battery device (1100) according to any one of claims 2, 4 and 5, characterized in that, The battery device (1110) further comprises a circuit board (1125) electrically connected with each battery monomer (1121), the circuit board (1125) is arranged on a side of the battery monomer (1121) close to the seat body part (11221); the output pole second component (1123) is provided with a sunken part (11231), and the circuit board (1125) is connected to the output pole second component (1123) and limited in the sunken part (11231).

23. An electrical device, comprising: The power consumption device comprises the battery device (1100) according to any one of claims 1-22, and the battery device (1100) is used for storing or providing electric energy.

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